Secondary battery tester, secondary battery testing method, and manufacturing method of secondary battery
First Claim
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1. A secondary battery tester for testing a state of a secondary battery based on an impedance characteristic of the secondary battery, the tester comprising:
- an impedance acquiring section configured to acquire an impedance value of the secondary battery; and
a determining section configured to determine a state of a solid electrolyte interface (SEI) layer of the secondary battery based on the impedance value acquired by the impedance acquiring section,wherein the second battery is a lithium ion secondary battery, andwherein the impedance acquiring section is configured to acquire the impedance value of the secondary battery when a voltage of the secondary battery is close to a lower limit of a use voltage range of the secondary battery.
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Abstract
There is provided a secondary battery tester for testing a state of a secondary battery based on an impedance characteristic of the secondary battery. The tester includes: an impedance acquiring section configured to acquire an impedance value of the secondary battery; and a determining section configured to determine a state of a solid electrolyte interface (SEI) layer of the secondary battery based on the impedance value acquired by the impedance acquiring section.
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15 Claims
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1. A secondary battery tester for testing a state of a secondary battery based on an impedance characteristic of the secondary battery, the tester comprising:
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an impedance acquiring section configured to acquire an impedance value of the secondary battery; and a determining section configured to determine a state of a solid electrolyte interface (SEI) layer of the secondary battery based on the impedance value acquired by the impedance acquiring section, wherein the second battery is a lithium ion secondary battery, and wherein the impedance acquiring section is configured to acquire the impedance value of the secondary battery when a voltage of the secondary battery is close to a lower limit of a use voltage range of the secondary battery. - View Dependent Claims (2, 3, 4, 5, 9, 10, 11, 12, 13)
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6. A secondary battery tester for testing a state of a secondary battery based on an impedance characteristic of the secondary battery, the tester comprising:
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a voltage setting section that sets a voltage of the secondary battery to a voltage that is close to a lower limit of a use voltage range of the secondary battery; an impedance acquiring section configured to acquire an impedance value of the secondary battery; and a determining section configured to determine a state of the secondary battery based on the impedance value acquired by the impedance acquiring section. - View Dependent Claims (7)
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8. A method of testing a secondary battery, comprising:
- testing a state of the secondary battery based on an impedance characteristic of the secondary battery, the testing step comprising;
(a) setting a voltage of the secondary battery to a voltage that is close to a lower limit of a use voltage range of the secondary battery; (b) acquiring an impedance value of the secondary battery; and (c) determining a state of the secondary battery based on the impedance value. - View Dependent Claims (14, 15)
- testing a state of the secondary battery based on an impedance characteristic of the secondary battery, the testing step comprising;
Specification